Dr. John M. Koostra, MD

Dr. Koostra practices at Natividad in Salinas, California, part of Monterey County, CA.

Dr. Koostra's NPI, 1922058437, was assigned on May 12, 2006. Dr. Koostra graduated from UC Davis School of Medicine in 1991. Dr. Koostra holds California license G75276.

Dr. Koostra's primary practice is Natividad, at 1441 Constitution Boulevard, Salinas, CA 93906 in Monterey County. The practice phone is (831) 755-4111.

Dr. Koostra's primary practice is Natividad in Salinas, California, part of Monterey County, CA. Dr. Koostra is also affiliated with Salinas Valley Health Medical Center. The medical group on file is Natividad Medical Center. Dmand AI also links Dr. Koostra to 2 more hospitals, 4 medical groups and 3 group practices and clinics, each named with a free account. Dr. Koostra's employer is on file too: a hospital.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Koostra practices, 7 sites in all. Vendor and product names are available with a free account.

Pulmonary disease is Dr. Koostra's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Koostra is board certified in critical care medicine by the American Board of Internal Medicine. Dr. Koostra is licensed in California.

Dmand AI lists asthma, chronic lung disease, chronic obstructive pulmonary disease (COPD), pneumonia, sleep apnea and tobacco use among the conditions Dr. Koostra treats.

CMS data shows 1,255 Medicare services from Dr. Koostra across 7 procedure codes in 2024, for 568 Medicare patients. Medicare paid $83,905 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 568 Medicare patients who saw Dr. Koostra in 2024. The largest group is 75 to 84, with 272 patients. 75% of them have copd, and 75% have high blood pressure. 16% are also on Medicaid. Their average risk score is 1.60, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Koostra's median patient age at 74, with 66% women.

In 2024, Dr. Koostra wrote 2,803 Medicare Part D claims for 474 patients. 43% of them were for generic drugs. CMS names the drug for 2,514 of them, across 44 drugs with 11 or more claims each, at $1,049,322 in total drug cost. In 2023, CMS named 3,092 claims across 58 drugs.

Dr. Koostra accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Koostra as offering telehealth.

Dmand AI links 2 papers to Dr. Koostra. The most frequent topics are Antioxidants, Nasal Mucosa and Therapeutic Irrigation. Dr. Koostra's most frequent co-author is Carroll E. Cross, MD.

CMS Open Payments shows 1,886 general payments to Dr. Koostra from 57 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 91% of the total. GlaxoSmithKline, LLC. paid the most, $6,028.

Dr. Koostra graduated from UC Davis School of Medicine in 1991.

Dr. Koostra is in network with 6 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.